<%--
XPTracker - Alternative Agile Tracking Tool
Copyright (C) 2006-2009  Stephen Starkey

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
--%>
<%@ tag import="org.jfree.chart.JFreeChart" %>
<%@ tag import="org.xptracker.services.reports.ReportFactory" %>
<%@ tag import="org.xptracker.web.ChartActionBean" %>
<%@ tag import="org.xptracker.web.SessionContext" %>
<%@ include file="/taglibs.jsp" %>
<%@ attribute name="timeline" type="org.xptracker.domain.Timeline" %>
<%@ attribute name="style" type="java.lang.String" required="false" %>

<%
  JFreeChart chart = ReportFactory.getInstance().getTimelineChart(timeline);
  if (chart != null) {
    String uuid = ChartActionBean.storeChart(new SessionContext() {
      public void setAttribute(String key, Object value) {
        jspContext.setAttribute(key, value, PageContext.SESSION_SCOPE);
      }
    }, chart);
%>

<s:url beanclass="org.xptracker.web.ChartActionBean" var="chartUrl"/>
<img src="${chartUrl}?id=<%=uuid%>&width=300&height=220" alt="Story History" style="${style}"/>

<% } else { %>
Chart not yet built.  
<% }%>